Because the presence of the strings muted or not represents an impedance factor ??? There will still be energy transfered to the strings... it will just get sucked up as it were by the felt. I would think... tho I do not know, that you'd have to remove them to get a valid test. Cheers RicB Ric writes: >Well I've never carefully measured and then removed the entire set of >extra strings to find out... To whit Sussssssan querries : Why do that? Just mute the fourth string, test sustain, unmute it, test sustain ...
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